Shingle



FIG. 1 is a right side elevation view of a shingle showing our new design, the left side elevation view being a mirror image of the right side elevation view;

FIG. 2 is a front elevation view thereof; and,

FIG. 3 is a front elevation view of another embodiment of a shingle and the right and left side elevation views are the same as the shingle of FIG. 1. 

CLAIM The ornamental design for a shingle, as shown and described. 